Voice activity detection device and method

The invention discloses a voice activity detection device and a voice activity detection method. One of a plurality of voice activity detection results can be selected as a basis for judging whether voice activity exists or not according to an environment detection result. The voice activity detection device comprises an environment detection circuit, a voice activity detection circuit and a voice activity decision circuit. The environment detection circuit is used for processing a sound input signal to generate an environment detection result. The voice activity detection circuit is used for analyzing the voice input signal according to a plurality of voice activity detection algorithms so as to generate a plurality of voice activity detection results. The voice activity decision circuit is used for selecting one of the plurality of voice activity detection results according to the environment detection result. 本发明公开一种语音活动检测装置与方法，能够依据环境检测结果选择多个语音活动检测结果之一作为是否有语音活动的根据。该语音活动检测装置包括环境检测电路、语音活动检测电路以及语音活动决策电路。该环境检测